Abstract [en]

The Earth's climate is affecting all countries and Sweden is no exception. With agrowing global environmental problem everyone needs to contribute to change.The project's contribution to the environment is to show how energyconsumption of a multi-family apartment block can be reduced. By calculatingUm for the house Lipton's current building envelope and identify the parts whereimprovements could be made, and compile the elements of design which aremost promising for improving the building envelope. Technical measures witch isnot directly related to the building envelope, such as demand controlledventilation, electrically efficient fans and other energy-smart solutions will beutilized to reduce Lipton specific energy consumption.Buildings lose heat through the building envelope but by harnessing the sun'senergy, think carefully about the building's placement, increase insulationthickness and use smart ventilation solutions, the project aims to reduce thehouse Liptons specific energy consumption to at least half of Boverkets energydemands in 2014 for new buildings in climate zone 2 which is set to110 kWh/m2 year.To calculate the specific energy consumption in use phase, a simple calculationprogram, TMF-Energy 2.3, will be used. In the project, the heating system,water/sewer and use of household energy is not to be included.The original design of the house Lipton has a specific energy consumption of56.9 kWh/m2 year which is relatively low and almost half of Boverkets energyrequirementsThe energy consumption of Lipton will be decreased by:• Improving Um for Lipton's building envelope.• Using a double-shell technology.Högskolan Dalarna• Plan where the house is located for favorable outer conditions• Using demand-controlled ventilation with energy efficient fans